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From: Linus Torvalds <torvalds@linux-foundation.org>
To: Ingo Molnar <mingo@kernel.org>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	linux-mm <linux-mm@kvack.org>, Dave Hansen <dave@sr71.net>,
	Peter Zijlstra <peterz@infradead.org>,
	David Rientjes <rientjes@google.com>,
	Rik van Riel <riel@redhat.com>,
	Rasmus Villemoes <linux@rasmusvillemoes.dk>
Subject: Re: [PATCH 0/3] mm/vmalloc: Cache the /proc/meminfo vmalloc statistics
Date: Sat, 22 Aug 2015 07:36:56 -0700	[thread overview]
Message-ID: <CA+55aFzgqtZj6_kRUbh5CrSNQtJ+es3cndnJXfBL-uA_CEfqrg@mail.gmail.com> (raw)
In-Reply-To: <1440240300-6206-1-git-send-email-mingo@kernel.org>

On Sat, Aug 22, 2015 at 3:44 AM, Ingo Molnar <mingo@kernel.org> wrote:
>
> Would something like this be acceptable (and is it correct)?

I don't think any of this can be called "correct", in that the
unlocked accesses to the cached state are clearly racy, but I think
it's very much "acceptable".

                   Linus

WARNING: multiple messages have this Message-ID (diff)
From: Linus Torvalds <torvalds@linux-foundation.org>
To: Ingo Molnar <mingo@kernel.org>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	linux-mm <linux-mm@kvack.org>, Dave Hansen <dave@sr71.net>,
	Peter Zijlstra <peterz@infradead.org>,
	David Rientjes <rientjes@google.com>,
	Rik van Riel <riel@redhat.com>,
	Rasmus Villemoes <linux@rasmusvillemoes.dk>
Subject: Re: [PATCH 0/3] mm/vmalloc: Cache the /proc/meminfo vmalloc statistics
Date: Sat, 22 Aug 2015 07:36:56 -0700	[thread overview]
Message-ID: <CA+55aFzgqtZj6_kRUbh5CrSNQtJ+es3cndnJXfBL-uA_CEfqrg@mail.gmail.com> (raw)
In-Reply-To: <1440240300-6206-1-git-send-email-mingo@kernel.org>

On Sat, Aug 22, 2015 at 3:44 AM, Ingo Molnar <mingo@kernel.org> wrote:
>
> Would something like this be acceptable (and is it correct)?

I don't think any of this can be called "correct", in that the
unlocked accesses to the cached state are clearly racy, but I think
it's very much "acceptable".

                   Linus

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  parent reply	other threads:[~2015-08-22 14:36 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-08-22 10:44 [PATCH 0/3] mm/vmalloc: Cache the /proc/meminfo vmalloc statistics Ingo Molnar
2015-08-22 10:44 ` Ingo Molnar
2015-08-22 10:44 ` [PATCH 1/3] mm/vmalloc: Abstract out vmap_area_lock lock/unlock operations Ingo Molnar
2015-08-22 10:44   ` Ingo Molnar
2015-08-22 10:44 ` [PATCH 2/3] mm/vmalloc: Track vmalloc info changes Ingo Molnar
2015-08-22 10:44   ` Ingo Molnar
2015-08-22 10:45 ` [PATCH 3/3] mm/vmalloc: Cache the vmalloc memory info Ingo Molnar
2015-08-22 10:45   ` Ingo Molnar
2015-08-22 14:36 ` Linus Torvalds [this message]
2015-08-22 14:36   ` [PATCH 0/3] mm/vmalloc: Cache the /proc/meminfo vmalloc statistics Linus Torvalds
2015-08-23  4:48 George Spelvin
2015-08-23  4:48 ` George Spelvin
2015-08-23  6:04 ` Ingo Molnar
2015-08-23  6:04   ` Ingo Molnar
2015-08-23  6:46   ` George Spelvin
2015-08-23  6:46     ` George Spelvin

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